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Method for preparing unfired lightweight aggregate from papermaking sludge and application of unfired lightweight aggregate
The invention discloses a method for preparing unfired lightweight aggregate from papermaking sludge and application, and relates to the technical field of solid waste resource utilization, the formula comprises the following components by mass: 40%-60% of papermaking sludge, 20%-30% of fly ash, 20%-30% of cement, 1%-2% of salt gypsum, 1%-2% of bentonite, 0.1%-0.2% of soda ash, and 0.1%-0.2% of a water reducer. The water addition amount is 22-25% of the total amount of the components; the preparation process of the lightweight aggregate comprises the following steps: (1) preparation of a premixed material: putting the paper mill sludge, the fly ash, the cement, the salt gypsum, the water reducing agent and the water into a stirrer according to a ratio, and uniformly mixing; (2) preparing slurry: putting cement, bentonite, sodium carbonate and water into a slurry making machine according to a ratio, and stirring to form slurry; and (3) feeding the prepared premix into a granulator, then slowly adding the prepared slurry, granulating into balls to obtain the required lightweight aggregate, and maintaining the lightweight aggregate for 3 days to leave a factory. The method is simple and feasible, low in cost, energy-saving and environment-friendly.
本发明公开了一种造纸污泥制备免烧轻骨料的方法和应用，它涉及固体废物资源化利用技术领域，按照质量百分数计算，配方包括如下组分：造纸污泥40％～60％、粉煤灰20％～30％、水泥20％～30％、盐石膏1％～2％、膨润土1％～2％、纯碱0.1％～0.2％、减水剂0.1％～0.2％，加水量为各组分总量的22％～25％；轻骨料的制备过程为：(1)预拌料的制备：将造纸污泥、粉煤灰、水泥、盐石膏、减水剂和水按照配比放入搅拌机内混合均匀；(2)浆料的制备：将水泥、膨润土、纯碱和水按照配比放入造浆机内搅拌成浆；(3)再将制备好的预拌料送入造粒机，然后缓慢加入制备好的浆料，进行造粒成球，得到所需的轻骨料，轻骨料养护3天后即可出厂。本发明简单易行，成本低，节能环保。
Method for preparing unfired lightweight aggregate from papermaking sludge and application of unfired lightweight aggregate
The invention discloses a method for preparing unfired lightweight aggregate from papermaking sludge and application, and relates to the technical field of solid waste resource utilization, the formula comprises the following components by mass: 40%-60% of papermaking sludge, 20%-30% of fly ash, 20%-30% of cement, 1%-2% of salt gypsum, 1%-2% of bentonite, 0.1%-0.2% of soda ash, and 0.1%-0.2% of a water reducer. The water addition amount is 22-25% of the total amount of the components; the preparation process of the lightweight aggregate comprises the following steps: (1) preparation of a premixed material: putting the paper mill sludge, the fly ash, the cement, the salt gypsum, the water reducing agent and the water into a stirrer according to a ratio, and uniformly mixing; (2) preparing slurry: putting cement, bentonite, sodium carbonate and water into a slurry making machine according to a ratio, and stirring to form slurry; and (3) feeding the prepared premix into a granulator, then slowly adding the prepared slurry, granulating into balls to obtain the required lightweight aggregate, and maintaining the lightweight aggregate for 3 days to leave a factory. The method is simple and feasible, low in cost, energy-saving and environment-friendly.
本发明公开了一种造纸污泥制备免烧轻骨料的方法和应用，它涉及固体废物资源化利用技术领域，按照质量百分数计算，配方包括如下组分：造纸污泥40％～60％、粉煤灰20％～30％、水泥20％～30％、盐石膏1％～2％、膨润土1％～2％、纯碱0.1％～0.2％、减水剂0.1％～0.2％，加水量为各组分总量的22％～25％；轻骨料的制备过程为：(1)预拌料的制备：将造纸污泥、粉煤灰、水泥、盐石膏、减水剂和水按照配比放入搅拌机内混合均匀；(2)浆料的制备：将水泥、膨润土、纯碱和水按照配比放入造浆机内搅拌成浆；(3)再将制备好的预拌料送入造粒机，然后缓慢加入制备好的浆料，进行造粒成球，得到所需的轻骨料，轻骨料养护3天后即可出厂。本发明简单易行，成本低，节能环保。
Method for preparing unfired lightweight aggregate from papermaking sludge and application of unfired lightweight aggregate
一种造纸污泥制备免烧轻骨料的方法和应用
FU YONG (author) / NI YINWEI (author) / WANG FANG (author) / ZHAO YU (author) / LUO JIANZHONG (author) / AN BEIBEI (author) / ZHANG XIAOYAN (author) / NAN NAN (author) / LI LEI (author)
2022-08-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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